... φ80 and 5kg , and the longest of this parts is 500mm .Normally ,the material of this part are :medium carbon steel, W-C ... alloy steel, carbon low alloy steel.The technology of the part is the warm and cold forging,and in the warm ... five stations warm forging press to manufacture . Now, the pars of the main customers are :GKN(shanghai)company, DELPHI (lingyun) company ...